docs: def set_pattern_step_time(self, patternnumber, stepnumber, timevalue):
          """Set the step time.
  
          Args:
              * patternnumber (integer): 0-7
              * stepnumber (integer): 0-7
              * timevalue (integer??): 0-900
          """
          _checkPatternNumber(patternnumber)
          _checkStepNumber(stepnumber)
          _checkTimeValue(timevalue, self.time_max)
          
          address = _calculateRegisterAddress('time', patternnumber, stepnumber)
          self.write_register(address, timevalue, 0)